I didn't catch that documentary, but you bet I would have tried to catch it had I known it was on. It'll repeat anyway.
No, a lot of my info is Wikipedian (Which may have come from the Discovery channel

). A lot of the historical points you made I made too, so I don't quite get what you mean.
I too did some googling and it does seem that people are reading a lot into it. At least I'm not alone there. How bizarre. Still, I thought it was so blatant it ruined the movie for me. I don't mind a message I disagree with in a movie, but it seemed so ham-fisted that I couldn't enjoy. Yet, it seems there was no message. Isn't it amazing how the human brain automatically seeks to perceive patterns? So I guess 300 was like the Virgin Mary on a grilled cheese sandwich.